I've got a weird issue on a client's server that I've never seen before.

We have a ton of addon domains set up under her main domain. She wanted it this way so that she only needed one FTP account to log in...Not a big deal. These addon domains have been running fine for months.

We recently added an SSL certificate to the MAIN domain on the account. After doing this, ONE of the addon domains brings up the standard welcome to cpanel page. All of the rest of the addon domains bring up their content as expected.

Any ideas? I'm tearing my hair out here trying to figure out what the problem is.

Check out the Apache configuration file, it likely lists the default DocumentRoot - we've had this problem in the past.

Fix that up, reload/restart Apache, and you should be good to go.

How weird that it would do that just from adding an SSL cert. I'll check it out later today.
Thanks for the tip.

Well I'm officially an idiot.

I had changed my local hosts file and added the addon domain's old IP address there when I was developing the website. So after I updated the IP address for the main domain in cPanel, my local hosts file was now pointing the addon domain to the wrong IP and I was in turn getting the cpanel page (If all of that makes sense)

End result: User error.